分類 / Names
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Characiformes (Characins) >
Characidae (Characins; tetras) > Stethaprioninae
Etymology: Astyanax: The name of Astyanax, Hector´s son in the Greek mythology (Ref. 45335); embera: Named for the native Americans known as the Embera, who occupy the type locality of this new species; noun in apposition.
Eponymy: Astyanax was the son of Hector in Greek mythology. See Homer’s Iliad for details. The reasoning for its use for a genus of characins is not explained. (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水 底生の漂泳性. Tropical
South America, Colombia.
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 8.3 cm SL オス/雌雄の選別がない; (Ref. 119406); 9.0 cm SL (female)
簡単な記述
検索表 | 形態学 | 形態計測学
This species, a member of the orthodus species-group of Astyanax, differs from other members of the group by the following characters: differs from villwocki, superbus, gandhiae, bopiensi, boliviensis, yariguies by the absence of a dark stripe on the sides of the body (vs. dark lateral stripe present or anterior prolongation of the caudal peduncle spot extending anteriorly over the silvery lateral stripe); differs from A. orthodus in having the caudal peduncle spot extending onto the ventral and dorsal margins of the caudal peduncle, covering 4-6 horizontal scale rows (vs. covering 2-4 horizontal scale rows on the caudal peduncle) and in having an unpigmented band across the anal-fin rays in both sexes (vs.pigmentation uniform on analfin rays); differs from A. moorii in body depth > 39% SL (vs. < 39% SL), the dorsal-pectoral fin distance > 40.5% SL (vs. < 40.5% SL), maxilla length < 33.5% HL (vs. > 33.5% SH), upper jaw length < 32% HL (vs. > 47% SH) and by the number of lateral-line scales 36-41 (vs. 44-50) (Ref. 119406).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Ruiz-C., R.I., C. Román-Valencia, D.C. Taphorn, P.A. Buckup and H. Ortega, 2018. Revision of the Astyanax orthodus species-group (Teleostei: Characidae) with descriptions of three new species. European Journal of Taxonomy 402:1-45. (Ref. 119406)
IUCNのレッドリストの状況は (Ref. 130435: Version 2024-2)
Human uses
用具
特記事項
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インターネットの情報源
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01738 (0.00782 - 0.03863), b=3.06 (2.89 - 3.23), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
栄養段階 (Ref.
69278): 2.9 ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 高い, １５か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
